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8850, 8846 or 8848m
0-2:11 a.m. EDT Apr 24, 2003
What is Everest's true height? On May 5, 1999, American and Nepalese climbers placed GPS-equipment on top of Everest. Alaskan based cartographer Bradford Washburn announced a new altitude of Everest, 8850m, based on the GPS-readings.

The 1998 German edition of Peter Gillman's excellent Everest book was titled, "Everest 8846m." In there is written that Bradford Washburn had announced already a new altitude of Everest; a prism was placed on top in May 1992 and laser-measuring were done. The result back then was 8846m.

First two meters lower, then two meters higher, and the old, "official" altitude exactly in the middle; The old land-based surveys are probably no less trust-worthy then the modern ones. Additionally there is the fact that the height of the snow accumulation varies from year to year up to possibly two meters, because of the heavy monsoon winds.

The most recent maps of China and Nepal, however, still show 8848m.

Source: AdventureStats.com

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